<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta name="author" content="lijun; 67086071; zwlijun@qq.com" />
<title>RIA Client API - BY 小网</title>
<link href="css/api.css" type="text/css" rel="stylesheet" />
</head>

<body>
  <ins>此文档描述XPathExpression对象的方法及属性</ins>
  <div class="nav">
    <a href="#XPathExpression">XPathExpression()</a>
    <a href="#selectNodes">selectNodes()</a>
    <a href="#selectSingleNode">selectSingleNode()</a>
  </div>
  <table width="600" cellspacing="1" cellpadding="1" border="0">
    <tbody>
      <tr>
        <th colspan="2">XPathExpression构造方法<a name="XPathExpression"></a></th>
      </tr>
      <tr>
        <td class="label">作&nbsp;&nbsp;&nbsp;用</td>
        <td>构造函数</td>
      </tr>
      <tr>
        <td class="label">基本语法</td>
        <td>var xpath = new XPathExpression(xpathText, namespaceURLMapper)</td>
      </tr>
      <tr>
        <td class="label">说&nbsp;&nbsp;&nbsp;明</td>
        <td>构造函数</td>
      </tr>
      <tr>
        <td class="label">示&nbsp;&nbsp;&nbsp;例</td>
        <td>
<pre>
var xPath = new XPathExpression("root", null);
</pre>
        </td>
      </tr>
    </tbody>
  </table>
  <table width="600" cellspacing="1" cellpadding="1" border="0">
    <tbody>
      <tr>
        <th colspan="2">selectNodes方法<a name="selectNodes"></a></th>
      </tr>
      <tr>
        <td class="label">作&nbsp;&nbsp;&nbsp;用</td>
        <td>获取匹配xpath的节点</td>
      </tr>
      <tr>
        <td class="label">基本语法</td>
        <td>var nodes = xpath.selectNodes(context);</td>
      </tr>
      <tr>
        <td class="label">说&nbsp;&nbsp;&nbsp;明</td>
        <td>获取匹配xpath的节点</td>
      </tr>
      <tr>
        <td class="label">示&nbsp;&nbsp;&nbsp;例</td>
        <td>
<pre>
var xPath = new XPathExpression("message", null);
var nodes = xPath.selectNodes(xmlDoc);
</pre>
        </td>
      </tr>
    </tbody>
  </table>
  <table width="600" cellspacing="1" cellpadding="1" border="0">
    <tbody>
      <tr>
        <th colspan="2">selectSingleNode方法<a name="selectSingleNode"></a></th>
      </tr>
      <tr>
        <td class="label">作&nbsp;&nbsp;&nbsp;用</td>
        <td>获取匹配xpath的的第一个节点</td>
      </tr>
      <tr>
        <td class="label">基本语法</td>
        <td>var nodes = xpath.selectSingleNode(context);</td>
      </tr>
      <tr>
        <td class="label">说&nbsp;&nbsp;&nbsp;明</td>
        <td>获取匹配xpath的的第一个节点</td>
      </tr>
      <tr>
        <td class="label">示&nbsp;&nbsp;&nbsp;例</td>
        <td>
<pre>
var xPath = new XPathExpression("msgs", null);
var node = xPath.selectSingleNode(xmlDoc);
</pre>
        </td>
      </tr>
    </tbody>
  </table>
</body>
</html>